import { AfterViewInit, ChangeDetectorRef, ElementRef, NgZone, OnDestroy } from '@angular/core';
import { NcDropdownDirective } from './dropdown.directive';
import * as i0 from "@angular/core";
export declare class NcDropdownMenuDirective implements AfterViewInit, OnDestroy {
    private dropdown;
    private el;
    private cdRef;
    private ngZone;
    private destroyed$;
    constructor(dropdown: NcDropdownDirective, el: ElementRef<HTMLElement>, cdRef: ChangeDetectorRef, ngZone: NgZone);
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<NcDropdownMenuDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NcDropdownMenuDirective, "[ncDropdownMenu]", never, {}, {}, never>;
}